1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
#!/usr/bin/env perl
#
# Copyright (c) 2014 Ed Maste. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# stackcollapse-pmc.pl collapse hwpmc samples into single lines.
#
# Parses a list of multiline stacks generated by "hwpmc -G", and outputs a
# semicolon-separated stack followed by a space and a count.
#
# Usage:
# pmcstat -S unhalted-cycles -O pmc.out
# pmcstat -R pmc.out -z16 -G pmc.graph
# stackcollapse-pmc.pl pmc.graph > pmc.stack
#
# Example input:
#
# 03.07% [17] witness_unlock @ /boot/kernel/kernel
# 70.59% [12] __mtx_unlock_flags
# 16.67% [2] selfdfree
# 100.0% [2] sys_poll
# 100.0% [2] amd64_syscall
# 08.33% [1] pmap_ts_referenced
# 100.0% [1] vm_pageout
# 100.0% [1] fork_exit
# ...
#
# Example output:
#
# amd64_syscall;sys_poll;selfdfree;__mtx_unlock_flags;witness_unlock 2
# amd64_syscall;sys_poll;pmap_ts_referenced;__mtx_unlock_flagsgeout;fork_exit 1
# ...
use warnings;
use strict;
my @stack;
my $prev_count;
my $prev_indent = -1;
foreach (<>) {
if (m/^( *)[0-9.]+% \[([0-9]+)\]\s*(\S+)/) {
my $indent = length($1);
if ($indent <= $prev_indent) {
print join(';', reverse(@stack[0 .. $prev_indent])) .
" $prev_count\n";
}
$stack[$indent] = $3;
$prev_count = $2;
$prev_indent = $indent;
}
}
print join(';', reverse(@stack[0 .. $prev_indent])) . " $prev_count\n";
|
